Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 35: Poster I
Q 35.72: Poster
Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof
A compact laser system for dual species atom interferometry — Christoph Grzeschik1, •Kai Lampmann1,2, Max Schiemangk1,2, Markus Krutzik1, Achim Peters1,2, and The QUANTUS Team1,2,3,4,5,6,7,8,9 — 1Institut für Physik, HU Berlin — 2Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenz-technik, Berlin — 3Institut für Quantenoptik, LU Hannover — 4Institut für Laserphysik, U Hamburg — 5ZARM, U Bremen — 6Institut für Quantenphysik, U Ulm — 7MPQ, München — 8Institut für angewandte Physik, TU Darmstadt — 9Midlands Ultracold Atom Research Centre, University of Birmingham, UK
We present a compact and integrated laser system for dual-species interferometry being capable of testing the universality of free fall with rubidium and potassium atoms in microgravity. The setup is built around a set of hybrid-integrated master-oscillator power-amplifier modules consisting of a distributed feedback laser diode, coupled into a tapered amplifier, providing output power in the Watt range and an intrinsic linewidth below 200 kHz. Results from several catapult launches at the droptower in Bremen with acceleration loads up to 50 g demonstrate the stability and ruggedness of the complete system. We discuss the electro-optical properties in detail, including the implementation and performance of compact laser electronics and FPGA-based digital frequency locking circuits.
The QUANTUS project is supported by the German Space Agency DLR with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant numbers DLR 50WM 1131-1137.